广州大气颗粒物与酸沉降的关系研究  

Study of the Relations between Atmospheric Aerosols and Acid Deposition

作　　者：高瑞英[1] 郭璇华[2] 

机构地区：[1]华南理工大学环境科学与工程学院 [2]华南理工大学化学科学学院,广东广州510641

出　　处：《广东化工》2005年第6期4-7,共4页Guangdong Chemical Industry

基　　金：广东省高教厅资助项目(124-B268030)

摘　　要：本文研究了大气颗粒物的酸度和酸缓冲能力,实验证实广州大气颗粒物中存在着游离的硫酸,其水溶性离子中SO_4^(2-)及NO_3^-占很大的比例。颗粒物中的碱性成分含量大于酸性成分,对酸性降水有一定的缓冲能力。气溶胶中细颗粒物的酸性大于粗颗粒物,且酸缓冲能力远低于粗颗粒物。The acidic pricipitation and acidity of inhalable pariticlates was studied in this paper.It indicatecl that there was H_2SO_4 in the aerosols surface, and the SO_42- and NO-_3 were primary ones exsit in the aerosols. For the acidity of aerosol, the fine particle was higher than the coarse particle's.But for the acidificationbuffering capacity, the fine particle’s was much lower than the coare particle’s.

关 键 词：广州市 大气颗粒物 酸沉降 大气污染 硫酸 缓冲能力 环境酸化 

分 类 号：X511[环境科学与工程—环境工程]